Machinery for tinning or retinning pans



(No Model.) 4 Sheets-Sheet l.

J. MONTO.

MACHINERY FOR TINNING OR RETINNING PANS. No. 372,555. Patented Nov. 1. 1887.

Inventor N. PETERS, PmmL-um her, Washington, 0.0.

(No Model.) 4 Sheets-Sheet 2.

J. MONTO.

MACHINERY FOR TINNING OR RBTINNING FANS. No. 372,555; Patented Nov. 1,1887.

N4 PETERS. Pholo-lvilwgrap her. wnmn mn. D C.

4 Sheets-Sheet 3.

(No Model.)

J. MONTO MACHINERY FOR TINNING 0R RETINNING PANS.

Patented Nov.

W. m M

N. FUERS. F'hclo-Ljlhngmphcr washin lnn, D. C.

(No Model.) 4 Sheets-Sheet 4. J. MONTO.

MACHINERY FOR TINNING OR RETINNING PANS.

No. 372,555. Patented Nov. 1, 188 1.,

Tag. 8

Fv'y. 6.

I U Fay. i3.

N4 PETERS. Photo-Ulhogmphar. Wishinglnm D. c.

JOSEPH MONTO, OF CHELSEA, MASSACHUSETTS.

MACHINERY FOR TlNNlNG OR RETINNING PANS.

SPECIFICATION forming part of Letters Patent No. 372,555, dated November 1, 1887.

Apr lication filed May 23, 1887. Serial No. 239,055.

To aZZ whom it may concern.

Be it known that I, J OSEPH Monro, of Chelsea, in the county of Suffolk, of the Commonwealth of Massachusetts, have invented anew and useful Improvement in Machinery for Tinning or Retinning Pans; and I do hereby declare the same tobe describedin the following specification and represented in the accompanying drawings, of Which Figure'l is a top view, Fig. 2 a side elevation, and Fig.3 an end view, of a machineernbodying my invention, the nature of which is defined in the claims hereinafter presented. In Figs. 2 and 3 the grease pot or reservoir and a portion of the furnace for heating it are shown in section, portions of the framework being represented as broken away in order to exhibit to advantage sundry parts of the mechanism, to be described. Fig. 4 is alongitudinal and vertical section taken through line 1 l of Fig. 1 in order to exhibit the rack T and the adjacent mechanism that operates therewith. Fig. 5 is a top view of the parts represented in Fig. 4, together with the rack U and some of the mechanism adjacent thereto. Fig. 6 is a transverse and vertical section of a portion of the rack T and its bearing or guide f, with the dog-sustaining rod (1', that moves with the said rack, such'figure showing the pinion K and the trippcr Z hereinafter mentioned. Fig. 7 is a horizontal section of the mechanism shownin Fig. 6, it being taken on line 2 2 thereof. Fig. 8 is a vertical section, and Fig. 9 a side view, of the rod d and its dog Y, such Figs. 4, 5, 6, 7, 8, and Qbeing represented on an enlarged scale. Fig. 10 is an inner side view, and Fig. 11 a top view, of the basin-sustaining arm of the lever 8', hereinafter referred to. Fig. 12 is a side view of the brake mechanism applied to the frame A and one end of each of the shafts F, G, and H. Fig. 13 is a vertical section of the pulley R. shalt H, and the springs and friction-levers or mechanism for engaging the pulley withand disengaging it from the shaft.

The mechanism to which my invention relates is for the purpose of retinning pans made of tinned sheet metal and struck into form by dies, the object being to insure to them a fine finish by means of a light coating of tin. In

the process of retinning such pans great care (No model.)

is necessary in withdrawing them frofn the hot grease in order to produce the desired or even distribution of the metal upon them. According to the usual practice prior to my invention, a pan, after having been immersed in a bath of molten tin, has been plunged into a bath of grease or tallow heated to about 500 Fahrenheit, the quantity of tin to remain on the article being gaged by the period of immersion and the finish being determined by the speed of withdrawal of the pan from the hot grease. The bath of hot grease melts the tin on the pan and removes the surplus. The withdrawing of the pan from the bath of grease has to be very gradually and steadily accomplished, and when done by manual labor is not only very tiresome to the operative, but frequently fails in effecting an even layer of the metal on the pan.

For the purpose of retinning pans it is customary to use a series of four pots arranged in a row and provided with a furnace or means of heating each, the first and third pots being for holding the grease,while in the second or intermediate and in the fourth pot is the tin. The last or fourth pot is smaller than either of the others, it being what is termed the list-pot, which is charged with the metal, and is to remove from the pan the list or drip orsmall surplus metal that may adhere to and protrude from thelower edge of the pan.

The pan is first introduced into the bath of grease of the first pot for about one-half a minute, after which the pan is immersed in the molten tin in the next pot, and after withdrawal therefrom the pan is submerged in the third pot or bath of grease, which will re move the surplus of the coating of tin, the amount removed being determined by the length of time of theimmersion, thefinish being due to the speed withwhich the pan is re moved from the grease bath. Finally, the lower part of the pan is dipped into the last pot in order thatthehot charge thereof may remove the drip or surplus of tin that may adhere to the lower edge of thepan. Next, the pan has the grease on it removed from it by sawdust and flour or other suitable means.

The machinery to be described is for introducing the pans or basins into and the repots.

moval of them from the secondof the grease- In the drawings the frame of the machine is shown at A as resting upon standards B, erected on the base-plate G, which is sustained by the brick-work D of a furnace, in which is set the grease pot or reservoir E, as represented. Supported in boxes or bearings a of the frame A are three shafts,-F G H, (see Fig. 1,) arranged parallel to each other, and havingpinions I K L on the ends which are directly over the reservoir E. The said shafts are also each provided with two friction-pulleys, as shown at M N, O P, and Q. R, respectively, which, loose on the shafts, are-revolved (in the direction indicated by arrows in Fig. 1) by belts from asuitable motor. Each of the said pulleys is provided with afriction mechanism for engaging it with the shaft, and there is ap: plied to the shaft between each pair of pulleys a slide, 1), c, or d, as shown in Fig. 1, to operate said friction mechanism when it is desired to clutch either of the pulleys to its shaft. Any suitable friction mechanism may be. used. In this case each pulley has two right-angular levers, a, fastened to it and extending from it, as shown in Fig. 3, the inner arms of such levers being to grasp the shaft and operate like brakes thereon. To the pulley thereis fixed a spring, I), to force the lever out of contact with the shaft, all being as shown in Fig. 13.

Each of the shafts F G H is provided on its outer end with a wheel, ,h, whose peripheryis nearly encompassed by a friction-brake, t.

(See Figs. 1 and 12, the latter figure being a side view of the wheel and its brake.) The said brake is secured to the frame A by a bolt, j, and provided with a screw, it, to contractit in order to regulate the tension of the brake on the wheel.

The office of the mechanism above described is to insure the stoppage of either of the shafts the moment it is released from the clutch of either ofits pulleys.

The pinions I K L, her einbefore mentioned, engage with racks S T U, arranged to move verticallyin bearings ar guidesc f g, erected on the frame A, one of such bearings, with its rack and pinion and adjacent parts, being shownin vertical section in Fig. 6 andjn hori' zontal section in Fig. 7 on an enlarged scale.

Thereis secured to each of the racks S TU, at ornear its ends'and inparallelism therewith, a rod, cl, (see Fig. 2,) to which are clamped by thumb-screws two dogs or slides, Y Z. The dog Y is shown on an enlarged scale in the relation it bears to the adjacent parts in side view in Fig. 4, in top view in Fig. 5, in vertical section in Fig. 6, in horizontal section in Fig. 7, and in vertical section in Fig. 8,the latter section being taken in a plane at right anglesto that shown in Fig. 6. It is also shown in side view in Fig. 9, the latter figure exhibitingthe side opposite to, that represented in Fig. 4. The said dog Y is made in two parts, 9 and i, pivoted together at e, the

upper part, being tubular for a portion of its length to receive and encompass the rod d,

which, throughout its length, is made square or prismatic in transverse section. Projecting from the upper end of the part 9 is a catch or car, it. The lower part, i, of the dog is a catch made to embrace the rod d on three of its sides, but is open on the fourth side,

(see Fig. 7,) so as to allow it to turn on its pivot when the inclined edge of the projection f onone side of said catch 1" (see Fig. 9) is carried into contact with and moved along against a projection or tripper, Z fixed to one of the bearings a. A spring, 76, (see Fig. 9,) secured tothe part bears against the'part i and returns .it to position when it is out of contact with the tripper Z. The clamp-screw of the dog is shown atj in Figs. at and 6.

Another shaft, V, .(see Figs. 1 and 3,) supported near its ends in bearings Z on the frame A, and with its axis in the same horizontal plane but at right angles to the axes of the shafts F G H, has secured to it near its ends, by set-screws, two arms, m r. The said shaft V is encompassed between the outer bearings Z by two sleeves or tubular shafts, \V X, said tubular shafts being adapted to turn independently of the shaft V and in the four intermediate bearings, Z. The shaft W has two arms, a 0, and the'shaft X two arms, 1) g, which are secured to the shafts by set screws. The arms m 07g are arranged in vertical and the arms ftp 1" in horizontal positions, or in planes at right angles to each other. (See Figs. 1 and 3.) The arms at o q are connected to forks s by rodst a v. Said rods are pivoted at one end to the said arms, and at the other end have bearings in standards 0', erected on the frame A. The arms ago 7 project into the path of movement of the catches t of the dogs Y, and when either of said arms is moved or turned on its axis by said catch i one of the arms at 0 q will be caused to move one of the slides b,

.c, or d into contact with the friction mechanism of one of the pulleys N Pv R.

Pivoted'to standards m projecting upward from the frame A, are three bell-cranks, n 0' p, (see Figs. 3, 4, and 5.).thelower arms of which are connected to forks w by rods 03 y zl (See Figs. land 8.) Said rods are pivoted to the bell-cranks and are supported in hearings in the frame A. The upper arms of said bellcranks project into the path of movement of CH? catch h of the dogs Y, and also into the path of movement of the dogs Z.

Each ofthe forkss and .10 (which are clamped the former to the rods tn a and the latter to the rods 00 y 2, see Fig. 1) extends into an annular gfoove, a, in one of the slides 12 c (I. Said slides havetapering ends, and, when they are forced between the *levers b, projecting from the pulleys M. N, O P, and Q R, as shown in Figs. 1 and 3, suchslidcs serve to clutch said pulleys to their shafts.

Each rack S T U has a rod, n, secured to it near its lower end,and so as to project from it equally in opposite directions, as shown in Fig. 3. To each rod n are two guides, 0 0, (see Fig. 2,) which are clamped to it by setscrewsp The said guides receive and encompass guide-rods q,which depend from the frame A, (see Figs. 2 and 3,) and together are to support the racks in their vertical movements. There are also secured to each rod of by set-screws two arms, 1" 1", (see Fig. 3,) to the lower end of each of which is pivoted a basin or pan sustaining lever, s. The longer arm of each of said levers s is provided with a tilting rod, t, formed as shown in Fig. 2. The said rods 15 work in slots a in the frame A, and operate with them to turn the levers s on their fulcra. The levers s are constructed with two V-shaped notches, o e, which serve as guides to the basin edge or rim supporting grooves w w, formed in the lower arms of said levers, (see Figs. 10 and 11.) the former being an inner side view and the latter a top view of the shorter arm of one of the levers 8.

By means of the rod a and the arms 1" 9*, applied thereto as descrlbed, the two levers s, for supporting the pans, can be moved apart from or nearer to each other, as the diameter of the pans may require, in order for them to be sustained by the levers. Furthermore, by having to the levers the tilting rods 15', working in slots at, the levers in rising out of the greasepot will be tipped, so as to incline the pans in a manner to prevent the metal from becoming unevenly laid upon them or settling to an improper extent on the lower sections of them.

In the operation of the machine there is always one pair of the pans out of the grease reservoir while the remaining two pairs are in it. YVhile either pair is descending in the grease, and just before it reaches its lower position, the mechanism for moving another pair is put in action, so as to raise such pair with the requisite velocity out of the grease and gradually turn the pair from a vertical into an inclined position. Thus on the first pair having nearly reached its lower position in the reservoir the second pair will be put in move ment upward. After removal of the second pair of pans and substitution of others for them, they are made to descend into the reservoir, and just previous to their attaining their lower position therein the third pair of pans commences to rise. Having attained its higher position and been removed from its sustaining mechanism, and a fresh pair substituted and put in motion downward, the first pair of pans is set in motion upward just before the third pair reaches its lower position.

I will now proceed to explain more particularly the operation of the mechanism hereinbefore described to effect results as stated.

In Fig. 2 of the drawings the rack S and the parts connected therewith are represented as in their higher positions. The pans or basins P I will suppose to have just emerged from the hot tallow and to be supported on the two levers s and to be in atinished state, except in having the list removed from them. The racks T and U,with their mechanism are represented in their lower position, the basins or pans P, sustained by their levers 8, being shown as they are situated when submerged in thehot tallow with which the reservoir in practice is supplied. I will now remove the finished basins or pans and replace them by two others just taken from the tin bath and push the rod 00(see Fig. 1) in the direction to cause fork to to move the slide b be tween the brakelevers a a of the pulley M, which will start to revolve the shaft F and its pinion I in the direction denoted by the arrow on said pulley M, and consequently the rack S will begin its descent. While the rod or is moved, as above mentioned, the bell-crank a, to which it is pivoted,(which is of the same form in side view as the bellcrank pshown in Fig. 3,) will be turned on its pivot into the position shown in dotted lines at a in Fig. 3. The rack 3 is now descending, and as it continues its movement the catch t" of the dog Y strikes the arm a of the tubular shaft \V (see Fig. 1) and turns said shaft WV in its bearings, and thereby moves its arm 0 sutiiciently (or into the position shown in dotted lines at b in Fig. 3) to carry the slide 0 (by means of the fork s and rod to, which is pivoted to said arm 0) into contact with the friction mechanism of the pulley P and clutches it to the shaft G,

and thereby causes it and its pinion K to rcvolve in the direction indicated by the arrow on said pulley P. The rack T will now commence its ascent. As soon as the pulley P was clutched to its shaft, as above described, the catch 1" was relieved from the arm a by the inclinefon its side (see Fig. 9) coming in con tact with the projection 1, (see Figs. 1, 5, 6, 7, and 9,) whereby the catch 2" was moved away and allowed to pass by the end of the arm n. The rack S continues its descent until the catch h of the (log Y strikes the upper arm of the bell-crank n, which is now in the position shown in dotted lines at (t in Fig. 3, and turns it into the position of the bellcrank shown in full lines in said Fig. 3. The last-described movement of the bell-crank a also carried the slide 1) (by means of the rod 00 and fork to) out of contact with the friction mechanism of the pulley M, thereby unclutehing it from the shaft F, and consequently arresting the descent of the rack S. \Vhen the slide 0 was moved into contact with the friction mechanism of the pulley P, as hereinbefore described, the fork to and the rod 3 to which it is clamped, were also moved so as to turn the bell-crank 0 on its pivot into the position shown in dotted lines at c in Fig. 3. The rack T is now ascending, and as its dog Z strikes the upper arm of the bell-crank 0 (which is in the position shown in dotted lines at c in Fig. 3,as above mentioned) it (the bellcrank 0) will be turned into the position of the bell-crank shown in full lines in Fig. 3, and the slide 0, by means of the rod 7 and fork to, will be withdrawn from the friction mechanism of the pulley P, and consequently the shaft G, pinion K, and rack T will be arrested in their the rack U in its descent will result.

movements. The finished basins on the sup porting-levers of the rack, T will next be replaced by unfinished ones, and the rod 7 moved so as to carry the slide a into contact with the clutch mechanism of the pulley O and the shaft G and its pinion K will commence to revolve in the direction of the arrow on the pulley O, and consequently the rackT will descend. When the rod y was moved, as just indicated, the hellcrank 0 was turned on its pivot into the position shown in dotted lines at a in Fig. 3, and when the catche", which is nowin movement downward with the rack T, strikes and turns the arm 17 on.

its axis the arm q will also move'the rod 1) and fork s. and consequently cause the slide d to clutch the pulley 1% to the shaft H, and thus to start the rack U in its upward movement. During the movement of the slide (1 into contact with the friction mechanism of the pulley R the fork w and its rod 2 were carried with it and the bell crank 1) turned on its axis into the position shown in dotted lines at a", Fig. 3. As the catch it in movement with the rack T strikes the upper arm of the bell crank 0 and turns it on its fulcrum from the position shown in dotted lines at a" tothat shown in full lines in Fig. 3. the rack T-will cease its descent. The rack U is now ascending, and as the dog Z in movement therewith strikes the under side of the upper arm of the bell-crank p and turns it from the position shown in dotted lines at c in Fig. 3 into that shown in full lines in said figure the rack U will complete its upward movement. The basins on the supportinglevers s of the rack U are now to be removed and others substituted, and the slide 11, by means of its rod 2 and fork w, is to be moved so as to clutch the pulley Q. with its shaft H. and thereby set it and its pinion L in revolution in the direction indicated by the arrow on said pulley Q. The rack U will now descend, and as the catch i in movement therewith strikes and turns the armr, which will turn the shaft V on its axis in its bearings Z in the frame and in the tubular shaftsW andX, the arm m on the farther end of the said shaft V will also move the slide 12, by

means of the fork s and rod t, and clutch the pulleyNto its shaft F, and startit and its pinion to revolve in the direction of the arrow on said pulley N, in consequence of whichthe rack S will now commence its ascent. tVhenithe catch h, now descending with the rack U, strikes the upper arm of the bell-crank p and turns it on its pivot from the position shown at a" in dotted lines to the position shown in full lines in Fig. 3 the slide 02 will be moved by the fork to and rod 2, so as to unclutch the pulley Q from its shaft H, and the stoppageof The rack S and its accompanying mechanism are now ascending and will cease their upward move ment when the dog Z strikes the under side of the upper arm of the bell'crank n and turns it from the position shown at c in dotted lines to that shown in full lines in Fig. 3; We have now reached the point from which we started.

From the above it will be seen that each of the racks S, T, and U is provided with mechanism for supporting a pair of the pans or basins, and besides it not only has mechanism for depressing them into and raising them out of the grease pot or reservoir E in the order hereinbefore explained, but there is combined with it a mechanism for tipping the pans from avertical or about a vertical position they have when in the grease-bath into an inclined position during their rise out of it, such tipping of them being to prevent the tin from unevenly spreading on them. a

1. The combination, with the grease pot or reservoir E, of mechanism, substantially as described, for introducing therein and removing therefrom in the order as specified tinned pans or basins, such mechan sm consisting of the series of racks S, T, and U, having mechanism for guiding them in their vertical movements,and provided not only with means of supporting the pans or basins, but with mechanism for moving them (the said racks) upward and downward and intermittingly relatively to the said grease pot or reservoir, all being essentially as described, such mechanism for supporting the pans being the notched and grooved arms of the levers 8, connected with the racks, and such mechanism for so operating the said'racks being the pinions I K L, shafts F G H, pulleys M.N O P Q R, the clutch-slides b c d, clutching-levers a, forks s w, rods t u v a: y 2, arms m. n, 0, p, q, and 1',

bellcranks 91 0'19, shaftsVW X, rods d, dogs Y'Z, wheels h, and friction-brakes i, all being arranged and applied as set forth.

2. The combination, with the grease pot or reservoir E, of mechanism, substantially as described, for supporting and introducing therein and removing therefrom in the order specified tinned pans or basins, and, while they are being raised, tipping them into in clined positions, essentially as and for the purpose set forth, such mechanism for so actuating the pans consisting of the series of racks I S T U. having mechanism for guiding them in their vertical movements, and provided not only with means of supporting the pans or basins, but with mechanism for moving them (the said racks) upward and downward and intermittingly' relatively to the said grease pot or reservoir, all being essentially as described, such mechanism-for supporting the pans being the notched and grooved levers 8, connected with the racks, and such mechanism for so operating the said racks being the pinions I K L, shafts F G H, pulleys M N O P Q, B, the clutch-slides b c d, clutching-levers a, forkss w, rodst u o 00 yz, arms m, n, 0, p, q, and r, bell-cranks n o p, shafts V W X, rods d, dogs Y Z, wheels h, and friction-brak es i, and such mechanism for supporting and tipping the pans being the said levers s, the

' described.

3. The combination, with each rack S, T, and U and the two levers 8 thereof for supporting the pans, of the rod n and the two adjustable arms r, applied to such rod and levers, substantially as set forth.

4-. The combination, with the grease pot or reservoir E, ofmechanism, substantially as de scribed, for supporti ng and introducing therein and removing therefrom, as specified, one or more tinned pans or basins, and while such is or are being raised tipping it or them into an inclined position or positions, essentially and for the purpose as set forth, such mechanism for so actuating the pan or pans consisting of a rack having mechanism for guiding it in its vertical movements, and provided not only with means of supporting the pan, pans, or

basins, but with mechanism for moving it (the said rack) upward and downward and lntermittingly relatively to said grease pot or reservoir, all being essentially as described, such 2 5 mechanism for supporting the pan or pans being the pair of notched and grooved levers 8, connected with the rack, and such mechanism for so operating the said rack being the pinion I, shaft F, pulleys M N, clutchslide 1), clutchinglevers a, fork to, rod a", bellcrank a, rod (1', catch h, dog Z, wheel h, and friction-brake i, and such mechanism for supporting and tipping the pan or pans being the said levers s, the arms 1-, and the bent rod t, the slots u, and rods of, the latter being attached to the said rack, and all being to operate essentially as described.

JOSEPH MONTO. Witnesses:

It. H. EDDY, R. B. TORREY. 

